38439971908801 has 4 divisors (see below), whose sum is σ = 38456035418052. Its totient is φ = 38423908399552.

The previous prime is 38439971908799. The next prime is 38439971908831. The reversal of 38439971908801 is 10880917993483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21733787126401 + 16706184782400 = 4661951^2 + 4087320^2 .

It is a cyclic number.

It is not a de Polignac number, because 38439971908801 - 2¹ = 38439971908799 is a prime.

It is a super-3 number, since 3×38439971908801³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38439971908831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8031751036 + ... + 8031755821.

It is an arithmetic number, because the mean of its divisors is an integer number (9614008854513).

Almost surely, 2^{38439971908801} is an apocalyptic number.

It is an amenable number.

38439971908801 is a deficient number, since it is larger than the sum of its proper divisors (16063509251).

38439971908801 is a wasteful number, since it uses less digits than its factorization.

38439971908801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16063509250.

The product of its (nonzero) digits is 94058496, while the sum is 70.

The spelling of 38439971908801 in words is "thirty-eight trillion, four hundred thirty-nine billion, nine hundred seventy-one million, nine hundred eight thousand, eight hundred one".